Floating type offshore photovoltaic platform

Abstract

A floating type offshore photovoltaic platform disclosed by the present invention comprises a platform main body, a fresh water cleaning system and a chemical solution spraying system, a plurality of discretely arranged photovoltaic modules are laid on the upper surface of the platform main body, and a gap is formed between any two adjacent photovoltaic modules. The fresh water cleaning system comprises a seawater desalination device and a water spraying device which are communicated, the water spraying device is used for spraying high-pressure water flow to the photovoltaic module, the chemical solution spraying system comprises a liquid storage cavity, a liquid outlet pipe and a spray head, the liquid storage cavity is located below the photovoltaic module, and the first end of the liquid outlet pipe is communicated with the liquid storage cavity; the second end of the liquid outlet pipe penetrates through the gap and is connected with the spray head. The floating type offshore photovoltaic platform has the advantages of being low in cleaning cost and high in efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore photovoltaic power generation, and in particular to a floating offshore photovoltaic platform. Background Art

[0002] During the operation of offshore photovoltaic platforms, dust, salt precipitated from seawater, excrement left by seabirds, etc. will be deposited on the surface of photovoltaic modules, blocking and reflecting sunlight, reducing the total amount of solar radiation received by the batteries and causing lower power generation efficiency.

[0003] For offshore photovoltaic platforms located in the deep sea, in order to reduce cleaning costs, high-pressure water jets from drones or unmanned robots are usually used to clean photovoltaic modules. However, high-pressure water jets consisting solely of fresh water cannot effectively clean the salt precipitated from seawater and the excrement left by animals. Chemical substances that can soften salt stains and bird droppings are usually added to the high-pressure water stream. However, it takes time for chemicals to soften salt stains and bird droppings, which increases the time it takes to flush photovoltaic modules with high-pressure water. This not only results in low cleaning efficiency, but also wastes chemicals and fresh water resources, and increases cleaning costs. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, an embodiment of the present invention provides a floating offshore photovoltaic platform, which has the advantages of low cleaning cost and high efficiency.

[0006] The floating offshore photovoltaic platform of an embodiment of the present invention includes a platform body, a fresh water cleaning system and a chemical solution spraying system, wherein the upper surface of the platform body is paved with a plurality of discretely arranged photovoltaic modules, and a gap is formed between any two adjacent photovoltaic modules; the fresh water cleaning system includes a seawater desalination device and a water spraying device connected to each other, and the water spraying device is used to spray a high-pressure water flow onto the photovoltaic modules; the chemical solution spraying system includes a liquid storage chamber, a liquid outlet pipe and a nozzle, wherein the liquid storage chamber is located below the photovoltaic module, the first end of the liquid outlet pipe is connected to the liquid storage chamber, and the second end of the liquid outlet pipe passes through the gap and is connected to the nozzle.

[0007] According to the floating offshore photovoltaic platform of the embodiment of the present invention, when the photovoltaic module needs to be cleaned, the chemical solution in the liquid storage chamber is first sprayed from the nozzle to the outer surface of the photovoltaic module to soften or dissolve the salt and / or bird droppings on the surface of the photovoltaic module, and then after a set time, the water spray device sprays the fresh water obtained by the seawater desalination device on the surface of the photovoltaic module in the form of a high-pressure water flow to clean the photovoltaic module. Among them, the setting of pre-spraying the chemical solution can enable the subsequent high-pressure water flow to complete the reliable cleaning of the photovoltaic module in a shorter time, which improves the cleaning efficiency and effectively reduces the cost of using chemical substances and fresh water.

[0008] In some embodiments, the platform body includes a lower frame, columns and an upper frame connected in sequence from bottom to top, the photovoltaic components are laid on the upper frame, a floating body is provided on the lower frame, and the seawater desalination device is installed on the lower frame or the columns.

[0009] In some embodiments, the columns are multiple and include a central column, an intermediate column and an edge column. The intermediate columns are multiple and arranged at intervals along the circumference of the central column. The edge columns are multiple and arranged at intervals along the circumference of the central column. The inner cavity of the central column forms the liquid storage cavity.

[0010] In some embodiments, there are multiple nozzles and they are discretely arranged above the photovoltaic module, and the nozzles are 360-degree automatic rotating nozzles.

[0011] In some embodiments, the chemical solution spraying system also includes an intermediate tube, the intermediate tubes, the liquid outlet pipes and the nozzles are equal in number and correspond one to one, a plurality of the intermediate tubes are arranged at intervals along the circumference of the central column, the intermediate tubes are connected to the bottom of the upper frame, the liquid outlet pipes are connected to the central column through the corresponding intermediate tubes, and a first water pump is installed on each of the intermediate tubes.

[0012] In some embodiments, the upper frame includes a walking pedal disposed at the gap, and the walking pedal is provided with a through hole for the liquid outlet pipe to pass through.

[0013] In some embodiments, the inner cavity of the edge column forms a fresh water cavity, the seawater desalination device is connected to the fresh water cavity, and the water spraying device is connected to the fresh water cavity.

[0014] In some embodiments, the seawater desalination device is connected to the liquid storage chamber, and the upper end surface of the central column is provided with a feeding hole connected to the liquid storage chamber, and the upper end opening of the feeding hole is exposed to the upper surface of the upper frame, and the floating offshore photovoltaic platform also includes a plug, which is detachably connected to the central column and closes the feeding hole.

[0015] In some embodiments, the water spraying device includes a drone or an unmanned robot.

[0016] In some embodiments, the platform body also includes a parking platform and a locking member, the UAV or the unmanned robot is suitable for docking on the parking platform, and the locking member is suitable for locking the UAV or the unmanned robot located on the parking platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of a floating offshore photovoltaic platform according to an embodiment of the present invention.

[0018] Figure 2 is a cross-sectional view of a floating offshore photovoltaic platform according to an embodiment of the present invention.

[0019] Reference numerals:

[0020] 1. Upper frame; 11. Walking pedal; 12. Parking platform; 2. Lower frame; 3. Central column; 31. Liquid storage chamber; 4. Middle column; 5. Edge column; 51. Fresh water chamber; 6. Seawater desalination device; 7. Liquid outlet pipe; 8. Nozzle; 9. Water spraying device; 10. Middle pipe; 110. Photovoltaic module; 120. First pipeline; 130. Second pipeline; 140. First water pump; 150. Second water pump; 160. Floating body. DETAILED DESCRIPTION

[0021] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0022] Combine the following Figure 1 and Figure 2 A floating offshore photovoltaic platform according to an embodiment of the present invention is described.

[0023] The floating offshore photovoltaic platform of the embodiment of the present invention includes a platform body, a fresh water cleaning system and a chemical solution spraying system. A plurality of discretely arranged photovoltaic modules 110 are laid on the upper surface of the platform body, and a gap is formed between any two adjacent photovoltaic modules 110. The fresh water cleaning system includes a seawater desalination device 6 and a water spraying device 9 connected to each other, and the water spraying device 9 is used to spray a high-pressure water flow to the photovoltaic module 110. The chemical solution spraying system includes a liquid storage chamber 31, a liquid outlet pipe 7 and a nozzle 8, the liquid storage chamber 31 is located below the photovoltaic module 110, the first end of the liquid outlet pipe 7 is connected to the liquid storage chamber 31, and the second end of the liquid outlet pipe 7 passes through the gap and is connected to the nozzle 8.

[0024] According to the floating offshore photovoltaic platform of the embodiment of the present invention, when the photovoltaic module 110 needs to be cleaned, the chemical solution in the liquid storage chamber 31 is first sprayed from the nozzle 8 to the outer surface of the photovoltaic module 110 to soften or dissolve the salt and / or bird droppings on the surface of the photovoltaic module 110, and then after a set time, the water spray device 9 sprays the fresh water obtained by the seawater desalination device 6 on the surface of the photovoltaic module 110 in the form of a high-pressure water flow to clean the photovoltaic module 110. Among them, the setting of pre-spraying the chemical solution can enable the subsequent high-pressure water flow to complete the reliable cleaning of the photovoltaic module 110 in a shorter time, which improves the cleaning efficiency and effectively reduces the cost of using chemical substances and fresh water.

[0025] It should be noted that when the floating offshore photovoltaic platform floats in the seawater, the seawater desalination device 6 is partially located below the sea surface to achieve desalination of the seawater. The fresh water formed by the treatment can be pre-stored in a fresh water chamber 51 formed by a water storage tank to ensure that the fresh water can meet at least one cleaning operation of the photovoltaic component 110.

[0026] In some embodiments, Figure 1 As shown, the platform body includes a lower frame 2, columns and an upper frame 1 connected in sequence from bottom to top, the photovoltaic module 110 is laid on the upper frame 1, the lower frame 2 is provided with a float 160, and the seawater desalination device 6 is installed on the lower frame 2 or the columns.

[0027] That is, the floating body 160 on the lower frame 2 is used to float the floating offshore photovoltaic platform in the sea, and the photovoltaic module 110 is ensured to be a set distance above the sea surface, so as to reduce the probability of seawater splashing onto the surface of the photovoltaic module 110 and precipitating salt stains, thereby effectively reducing the cleaning cycle of the photovoltaic module 110.

[0028] Specifically, a float 160 is also provided at the lower end of the column to increase the buoyancy of the floating offshore photovoltaic platform and effectively reduce the risk of sinking due to buoyancy failure.

[0029] In some embodiments, Figure 2 As shown, there are multiple columns including a central column 3, an intermediate column 4 and an edge column 5. There are multiple intermediate columns 4 and they are arranged at intervals along the circumference of the central column 3. There are multiple edge columns 5 and they are arranged at intervals along the circumference of the central column 3. The inner cavity of the central column 3 forms a liquid storage cavity 31.

[0030] By using the inner cavity of the central column 3 as the liquid storage cavity 31 for storing the chemical solution, it is no longer necessary to set up other boxes for storing the liquid, thereby effectively reducing the manufacturing cost of the chemical solution spraying system. In addition, the chemical solution stored in the liquid storage cavity 31 will not cause the center of gravity of the platform body to deflect, effectively ensuring the floating reliability of the floating offshore photovoltaic platform in the seawater.

[0031] Specifically, the inner cavity of the central column 3 can be completely transformed into the liquid storage cavity 31, or partially transformed into the liquid storage cavity 31, for example. Figure 2 As shown, a partition is provided in the middle of the inner cavity of the central column 3, and only the upper half of the inner cavity is transformed into a liquid storage cavity 31. A liquid level sensor is provided in the liquid storage cavity 31, and the liquid level height of the chemical solution in the liquid storage cavity 31 can be detected in real time by the liquid level sensor, so as to judge whether the chemical solution needs to be supplemented, so as to avoid the lack of chemical solution affecting the cleaning of the photovoltaic module 110.

[0032] In some embodiments, there are multiple nozzles 8 which are discretely arranged above the photovoltaic assembly 110 , and the nozzles 8 are 360-degree automatic rotating nozzles.

[0033] At this time, each nozzle 8 corresponds to a different area of ​​the photovoltaic component 110, and the surface area of ​​the photovoltaic component 110 corresponding to each nozzle 8 is smaller, which makes it convenient for the nozzle 8 to spray the chemical solution more evenly on the photovoltaic component 110 in the corresponding area, effectively ensuring the subsequent fresh water cleaning effect on the photovoltaic component 110.

[0034] In some embodiments, Figure 2 As shown, the chemical solution spraying system also includes an intermediate tube 10. The number of intermediate tubes 10, liquid outlet pipes 7 and nozzles 8 are equal and correspond one to one. Multiple intermediate tubes 10 are arranged at intervals along the circumference of the central column 3. The intermediate tubes 10 are connected to the bottom of the upper frame 1. The liquid outlet pipe 7 is connected to the central column 3 through the corresponding intermediate tube 10. A first water pump 140 is installed on each intermediate tube 10.

[0035] By installing a first water pump 140 on each intermediate tube 10, the spraying condition of each nozzle 8 can be set relatively independently. For example, if the camera module observes excessive salt and / or bird droppings attached to a certain area, the corresponding first water pump 140 can be controlled to work longer than other first water pumps 140 to spray more chemical solution in the area, thereby better softening or dissolving the salt and bird droppings, thereby ensuring better subsequent cleaning effect and lower cleaning cost.

[0036] Specifically, the intermediate tube 10 is connected to the upper frame 1 by at least two locking members arranged at intervals along its length direction, the intermediate tube 10 extends in the horizontal direction, the liquid outlet pipe 7 extends in the height direction, the intermediate tube 10 and the liquid outlet pipe 7 are welded, or the intermediate tube 10 and the liquid outlet pipe 7 are connected by a right-angle two-way pipe.

[0037] In some embodiments, Figure 1 As shown, the upper frame 1 includes a walking pedal 11 arranged at the gap, and the walking pedal 11 is provided with a through hole for the liquid outlet pipe 7 to pass through.

[0038] The walking pedal 11 is used for workers to walk on to perform maintenance on the photovoltaic assembly 110. By arranging the nozzle 8 above the walking pedal 11, it is convenient for workers to repair and replace the nozzle 8 when there is a blockage or other problems.

[0039] It should be noted that the walking pedal 11 may be a grille plate, and the through hole is a grille hole in the grille plate.

[0040] In some embodiments, Figure 2 As shown, the inner cavity of the edge column 5 forms a fresh water cavity 51 , the seawater desalination device 6 is connected to the fresh water cavity 51 , and the water spraying device 9 is connected to the fresh water cavity 51 .

[0041] The setting of the fresh water chamber 51 facilitates the storage of fresh water generated by the desalination device 6, ensuring that when cleaning the photovoltaic module 110, there is sufficient fresh water without being affected by the power of the desalination device 6. A miniaturized and lower-cost desalination device 6 can be used, and the desalination device 6 continues to work to complete the storage of fresh water when the photovoltaic module 110 is not being cleaned. In addition, the inner cavity of the edge column 5 is transformed into the fresh water chamber 51, and no other box for storing fresh water is required, thereby effectively reducing the manufacturing cost of the fresh water cleaning system.

[0042] Specifically, Figure 2 As shown, the seawater desalination device 6 is connected to the lower frame 2 and communicates with the fresh water chamber 51 through the second pipeline 130 .

[0043] In some embodiments, Figure 2 As shown, the seawater desalination device 6 is connected to the liquid storage chamber 31, and the upper end surface of the central column 3 is provided with a feeding hole connected to the liquid storage chamber 31, and the upper end opening of the feeding hole is exposed to the upper surface of the upper frame 1. The floating offshore photovoltaic platform also includes a plug, which is detachably connected to the central column 3 and closes the feeding hole.

[0044] When the liquid level sensor detects that the liquid level of the chemical solution in the liquid storage chamber 31 is too low, the staff will arrive at the floating offshore photovoltaic platform and add chemical substances into the liquid storage chamber 31 through the feeding hole. At the same time, the seawater desalination device 6 injects fresh water into the liquid storage chamber 31 through the first pipeline 120. The fresh water and chemical substances are mixed to form a chemical solution of a set concentration.

[0045] Specifically, the feeding hole is a threaded hole, and the plug is threadably fitted in the feeding hole through the threaded hole.

[0046] In some embodiments, the water spraying device 9 includes a drone or an unmanned robot. Therefore, for the floating offshore photovoltaic platform located in the deep sea, no staff is required to clean it, which greatly reduces the cleaning cost of the photovoltaic assembly 110.

[0047] In some embodiments, Figure 1 and Figure 2 As shown, the platform body also includes a parking platform 12 and a locking member. The drone or unmanned robot is suitable for docking on the parking platform 12, and the locking member is suitable for locking the drone or unmanned robot located on the parking platform 12.

[0048] The provision of the parking platform 12 and the locking member ensures that a UAV or unmanned robot that is not performing cleaning operations can be stably parked on the parking platform 12, thereby preventing the UAV or unmanned robot from shaking due to the marine environment or even colliding with surrounding components, thereby reducing its service life.

[0049] Specifically, the edge column 5 with the fresh water chamber 51 is connected to the parking platform 12 through the third pipeline. After the drone or unmanned robot is parked on the parking platform 12, the fresh water chamber 51 is connected to the water storage chamber in the drone or unmanned robot through the third pipeline. The second pumping pump 150 is installed on the third pipeline, and the fresh water in the fresh water chamber 51 is pumped into the water storage chamber by the second pumping pump 150.

[0050] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0051] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0054] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0055] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A floating offshore photovoltaic platform, characterized in that: include: A platform body, wherein a plurality of discretely arranged photovoltaic modules are laid on the upper surface of the platform body, and a gap is formed between any two adjacent photovoltaic modules; A fresh water cleaning system, the fresh water cleaning system comprising a seawater desalination device and a water spraying device connected to each other, the water spraying device being used to spray a high-pressure water flow onto the photovoltaic module; A chemical solution spraying system, the chemical solution spraying system comprises a liquid storage chamber, a liquid outlet pipe and a nozzle, the liquid storage chamber is located below the photovoltaic module, the first end of the liquid outlet pipe is connected to the liquid storage chamber, and the second end of the liquid outlet pipe passes through the gap and is connected to the nozzle.

2. The floating offshore photovoltaic platform according to claim 1, characterized in that: The platform body comprises a lower frame, columns and an upper frame which are sequentially connected from bottom to top, the photovoltaic modules are laid on the upper frame, a floating body is arranged on the lower frame, and the seawater desalination device is installed on the lower frame or the columns.

3. The floating offshore photovoltaic platform according to claim 2, characterized in that: There are multiple columns including a central column, an intermediate column and an edge column. There are multiple intermediate columns arranged at intervals along the circumference of the central column. There are multiple edge columns arranged at intervals along the circumference of the central column. The inner cavity of the central column forms the liquid storage cavity.

4. The floating offshore photovoltaic platform according to claim 3, characterized in that: There are multiple nozzles which are discretely arranged above the photovoltaic module, and the nozzles are 360-degree automatic rotating nozzles.

5. The floating offshore photovoltaic platform according to claim 4, characterized in that: The chemical solution spraying system also includes an intermediate tube, wherein the number of the intermediate tubes, the liquid outlet pipes and the nozzles are equal and correspond one to one, and a plurality of the intermediate tubes are arranged at intervals along the circumference of the central column, the intermediate tubes are connected to the bottom of the upper frame, and the liquid outlet pipes are connected to the central column through the corresponding intermediate tubes, and a first water pump is installed on each of the intermediate tubes.

6. The floating offshore photovoltaic platform according to claim 2, characterized in that: The upper frame comprises a walking pedal arranged at the gap, and the walking pedal is provided with a through hole for the liquid outlet pipe to pass through.

7. The floating offshore photovoltaic platform according to claim 3, characterized in that: The inner cavity of the edge column forms a fresh water cavity, the seawater desalination device is connected to the fresh water cavity, and the water spraying device is connected to the fresh water cavity.

8. The floating offshore photovoltaic platform according to claim 7, characterized in that: The seawater desalination device is connected to the liquid storage chamber, and the upper end surface of the central column is provided with a feeding hole connected to the liquid storage chamber, and the upper end opening of the feeding hole is exposed to the upper surface of the upper frame. The floating offshore photovoltaic platform also includes a plug, which is detachably connected to the central column and closes the feeding hole.

9. The floating offshore photovoltaic platform according to claim 8, characterized in that: The water spraying device includes a drone or an unmanned robot.

10. The floating offshore photovoltaic platform according to claim 9, characterized in that: The platform body also includes a parking platform and a locking member. The UAV or the unmanned robot is suitable for docking on the parking platform. The locking member is suitable for locking the UAV or the unmanned robot located on the parking platform.

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